Hong Chung defeated Yusuke Watanuki 6-3 6-2 in the Korea F6 qualifying round on hard. The upset overturned the form book — Yusuke Watanuki came in leading the head-to-head 2–0, but Hong Chung had been the form player, winning 2 of their last 5 on hard. Hong Chung claimed a first win over Yusuke Watanuki in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2014-06-30 | Korea F8 | QF | hard | Yusuke Watanuki | 6-7(2) 6-4 6-2 |
| 2013-05-06 | Korea F2 | R16 | hard | Yusuke Watanuki | 6-4 6-4 |
Averages over each player's completed matches in the selected window (59 vs 52). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About